Open source. Open possibilities.

A free 21-lesson Microsoft course for beginners to build generative AI applications, covering LLMs, prompt engineering, RAG, agents, fine-tuning, and more, with Python/TypeScript examples.

A lightning-fast search engine API providing AI-powered hybrid search, typo tolerance, and search-as-you-type capabilities for websites and applications.

Agentic OS is a self-hosted control plane for running business operations as a fleet of AI agents. It features a cost-aware LLM router, cross-module workflows, and human-in-the-loop approvals for finance, support, and compliance.

ParadeDB is a Postgres extension that integrates full-text search, vector retrieval, and analytics into a single database.

CocoIndex is an open-source incremental indexing framework designed to provide AI agents and LLM applications with continuously fresh context by reprocessing only changed data.

Lemory is a local middleware that transforms markdown notes (e.g., Obsidian vaults) into a context database for AI agents. It supports keyless on-device hybrid search, Korean-specific processing, hierarchical token savings, and knowledge graph visualization, integrating with various AI tools via MCP.

Open Kioku is a local repository intelligence tool for AI coding agents. It indexes codebases locally to provide context, generate bounded edit plans, and verify actual diffs against those plans.

DocsGPT is an open-source AI platform for building intelligent agents and assistants, featuring document analysis, multi-model support, and enterprise search capabilities.

Typesense is a fast, typo-tolerant, in-memory fuzzy search engine designed as an open-source alternative to Algolia and a simpler alternative to Elasticsearch.

A Python library and CLI tool for searching the SLB Energy Glossary in English and Spanish, featuring live site scraping, local SQLite caching, and semantic search capabilities.

Khoj is an open-source, self-hostable personal AI app that connects to local or online LLMs, answers questions from the web and your documents, and supports custom agents, automations and semantic search across browser, desktop, phone and chat clients.

An all-in-one AI framework for semantic search, LLM orchestration, and language model workflows.

Semantica is a graph-native infrastructure designed to provide structured context, deterministic reasoning, and full decision provenance for AI systems, serving as a semantic layer for LLMs and agents.

SYNAPSE is an AI-powered intelligence aggregation and automation platform featuring a multi-agent system and RAG capabilities for research and document generation.

Haystack is an open-source AI orchestration framework for building production-ready LLM applications, RAG systems, and autonomous agents in Python.